Machine-wrench.



E. T. LADD.

MACHINE WRENCH.

APPLICATION FILED Jmyze. 1910.

Patented Nov.29, 1910.

TIJN NN '.14' N Sw@ Attorneys EDWARD T. LADD, OF DENVER, COLORADO.

MACHINE-WRENCH.

Specification of Letters Patent.

Patented Nov. 29,1910.

Application filed July 29, 1910. Serial No. 574,505.

To all whom it may concern:

Be it known that I, EDWARD T. LADD, a citizen of the United States,residing at Denver, in the county of Denver and State of Colorado, haveinvented a new and useful Machine-lVrench, of which the following is aspecification.

lt is the object of the present invention to provide an improvedconstruction of Inachine wrench and the invention aims primarily toprovide a machine wrench 'so constructed that by rotating the operatingcrank handle thereof in but oneV direction, the nuts may be tightened orloosened as may be desired. Ordinarily, in machine wrenches, it isnecessary, in loosening a nut, to rotate the operating` crank handle ina direction opposite to that in which it is to be rotated in tighteninga nut and the wrench of the present invention therefore presents adecided advantage over wrenches in which the crank handle must berotated in two directions.

The invention aims further to attain the above mentioned ends withoutemploying any clutch mechanism or gear shifting mechanism.'

The invention aims further to provide an improved means for holding thebolts against rotation while the nuts are being removed therefrom.

Vth the above and other objects in view, the invention consists in thegeneral construction and arrangement of parts shown in the accompanyingdrawings in which,-

Figure 1 is a front elevation of the device. Fig. 2 is a verticalsectional view on the line 2 2 of Fig. 1. Fig. 3 is a horizontalsectional view on the line 3 3 of Fig. 1. Fig. 4 is a perspective viewin detail of one of the chucks of the wrench.

In the drawings, the device is illustrated embodying a frame which isindicated by the numeral 5 and is to be secured upon an upright or othersuitable support such, for example, as a post. Integral with this frame5 is an upper bearing which is indicated by the numeral 6, anintermediate. bearing indicated by the numeral 7, and a lower bearingindicated by the numeral S, these bearings being of any suitable ordesired combination.

A shaft indicated by the numeral 9 is journaled at its upper end in thebearing 6 and at its lower end in the bearing 8 and extends through theintermediate bearing 7 as clearly illustrated in Fig. 2 of the drawings.

A beveled gear indicated by the numeral 10 is secured upon the shaft 9at the upper end thereof directly below the upper bearing 6 andjournaled also in this bearing, in a horizontal plane, is a shaft 11carrying a beveled gea-r 12 which is in mesh with the gear 10. The gear12 is fixed upon one end of the shaft 11 and a crank handle 13 is fixedupon the other end of the shaft, preferably at the right hand side ofthe frame 5. It will be readily understood that by rotating the crankhandle 13, rotative movement will be imparted to the shaft 11 andthrough the medium of the gears 10 and 12, to the shaft 9. rlhe chucksof the machine will now be specifically described and the manner ofmounting the same and afterward the gear connections for driving thechucks will be referred to.

Each of the chucks mentioned above includes a cylindrical body indicatedby the numeral 14 and this body at its upper end 1s formed with a.reduced threaded portion 15 upon which is screwed a collar 1G. rlhebearing 8 or in other words that portion of the machine constitutingthis bearing eX- tends forwardly to a suitable degree as clearly shownin Figs. 2 and 3 of the drawings and is formed with openings indicatedby the numeral 17 of which there are two, there being provided also twoof the chucks the bodies of which are rotatably fitted in the saidoaenings 17. The chucks 14 are preferably mounted one in advance of theother and each chuck body 14 is formed with a gear portion 18, the saidportions of the bodies of the chucks being in mesh whereby rotativemovement imparted to one chuck will result in rotation of the otherchuck in an opposite direction. The chuck body 14 is formed with anaxial opening indicated by the numeral 19 and this opening, throughoutits lower portion, may be of any contour but at its upper end ispolygonal and preferably rectangular, and fitted in the upper end of theopening in the chuck body 14 is a nut sockeo 20, this socket having ashoulder 21 resting upon the upper end of the body 14 and having anut-receiving bore 22 of a contour corresponding to the contour of thenut to be removed, it being understood however that a number of thesenut sockets are provided with each machine so that nuts of various sizesand various shapes may be removed by substituting one socket foranother, prior to operation of the machine. Inasmueh as the nut socketsQ0 are polygonal in cross section as are also the upper ends ot theopenings 19 in the chuck body 14, any means for positively securing thesockets in the upper ends of the openings in the respective chuck bodiesis unnecessary.

As will be readily understood, the `machine embodying the presentinvention is intended primarily to be used in tightening and looseningnuts on carriage wheels anc as a suitable rest or support for the fellyof the wheel the nuts of which are being tightened or loosened by themachine, there is provided a member having spaced sides 23 andconnecting portions 24, this member being disposed upon the upper sideof the forwardly extended portion of the bearing 8 with one ot itsconnecting portions extending between the upstanding nut sockets 20 ofthe two chucks and its rear connecting portion extending across betweenthe sides 28 at their rear ends and rearwardly of the rearmost nutsocket 20.

As illustrated in the drawings, the upper side of the bearing 8 is cutaway or shouldered to afford a seatfor this wheel-supporting member, andthis rear connecting portion Q4 of the wheel-supporting member is formedwith a transversely extending rib indicated by the numeral :25 which ribtits in a groove 2G formed in the bearing 8. At the front, and upontheir under sides` the side portions Q3 of the wheel-supporting memberare provided with downwardly projecting studs indicated by the numeralQ7 and these studs t in sockets 28 formed in the upper face of the cutaway portion ot the bearing S. It will now be readily understood thatwhereas when the wheel-supporting member is in position upon the bearingS as illustrated in the several figures ot the drawings, it will be heldagainst lateral or forward displacement, it may at the sam, time bereadily removed when it is desired to substitute one nut socket foranother or to remove the chucks, It will be observed that the openings19 in the chuck bodies 1% increase in size in a downward direction sothat a nut unscrewed from a bolt by either socket 20, will t'all throughthe bore of this socket and through the opening 19.

A gear indicated by the numeral is secured upon the shaft 9 at the lowerend thereof and meshes with the gear portion of the rearmost chuck 14,and it will new be readily understood that by rotating the crank handle13 and thereby imparting rotative movement to the shaft 9, the rearchuck will be rotated in a direction to loosen a nut received in itsrespective nut socket Q0. Such rotative movement afforded to the rearchuck 111 will result in the rotation in an opposite direction to theforward chuck, or in other words in rotation of this last mentionedchuck in a direction to tighten a nut received in its socket 20.Consequently, by rotating the crank handle 13 in a forward direction, orin other words in a direction from the operator, and disposing a vehiclewheel upon the wheel-support with a nutupon the wheel received in thesocket of the rear chuck, the said nut will be turned olf from its bolt,while on the other hand by so disposing the wheel that the nut will bereceived in the socket of the forward chuck, the nut will be tightenedupon its bolt.

As a means for holding the bolt against rotation while the nut is beingtightened or loosened, there is provided a hand lever in dicated by thenumeral 80, this lever being pivoted to the intermediate bearing 7 andbeing provided with bolt head engaging spurs 31 held at adjustment byset screws 3:2. These spurs 31 are so located upon the hand lever 30that by pressing down upon the lever, one or the other of these spurswill be caused to bite into the head of the bolt. In order that thishand lever may be held normally in inoperative position and consequentlyout of the way of a wheel telly to be disposed upon the wheel supportingmember of the device, there is provided a spring wire member indicatedby the numeral 33 and secured upon the upper bearing G, this memberbeing so constructed as to frictionally receive the handle end of thelever 30 when the said lever is swung up upon its pivot.

lhat is claimed is ln a wrench of the class described, a body memberincluding a supporting portion, a rotatable chuck mounted in thesupporting portion, means for rotating the chuck, and a work supportremovably mounted upon the supporting portion of the body and includingspaced side members between which the upper end of the nut socketprojects, the said upper end of the chuck being in substantially thesame plane as the upper faces of the said sides ot' the work support.

In testimony that I claim the Jforegoing as my own, I have heretoai'lixed my signature in the presence of two witnesses.

EDVARD T. LADD.

Titnesses z F. lV. BIRNEY, I. H. Nonrr-IRUP.

